I think the only one that might be more complicated than Yue would be like. Clow/Eriol. Because y e a h. That incorporates Holic and Tsubasa into the mix too.

Everyone else on the app is already like 'Xiaolang is the least subtle how are they honestly not together yet?' while also being 'okay but they are like thirteen.' at the same time. Not that this stops her brother of course.